Automatic steam-trap.



1 PATENTED APR. 19, 1904.

J. M. TOWNE. AUTOMATIC STEAM TRAP.

APPLICATION rum) mm 12, 1902.

N0 MODEL.

I M I I r K t $1 @ZW/ iNVENTOR WWNESSES 569M141 .24. ATTORNEYS UNITEDSTATES Patented April 19, 1904 P TENT Orricr...

JOSEPH M. TOVVNE, OE EAST ORANGENEVV ERSEY, ASSIGNOR TO SAFETY CARHEATING & LIGHTING OOMPANKA CORPORATION OF NEW JERSEY.

AuTolvlAT c STEAM-TRAP.

SPECIFICATION forming part of Letters Patent No. 757,694, dated April19, 1904.

Application filed June 12, 1902. Serial No. 111,317. (No model.)

T at whom it may concern:

Be it known that I, JosErH M. TOWNE, a citizen of the United States,residing at East Orange, Essex county, New Jersey, have invented certainnew and useful Improvements in Automatic Steam-Traps, of which thefollowing is a specification.

My invention relates to automatic steamtraps, and has for its object toproduce an automatic trap for carrying olf the water of condensationwhich would otherwise accumulate in a system of steam-pipes and at thesame time while drainingolf the water of condensation to prevent thewaste of steam.

In United States Letters Patent No. 477, 855, dated June 28, 1892, isshown a steam-trap specially adapted for use in steam-heating systems ofrailroad-cars, in which the difference in the coefficients of expansionof the two different metals is relied upon to eliect the draining off ofthe water of condensation as it accumulates. My present invention is animprovement upon such steam-trap and will be described with specialreference to the accompanying drawing, which shows one form of steamtrap in which my invention is embodied, it being understood that thisdrawing is illustrative merely and shows but one of many forms in whichmy invention may be embodied.

The drawing shows a longitudinal section of the steam-trap, the tubesthereof being fore-shortened in order to save space, it being understoodthat the broken-away portion is of considerably greater length than isshown in the drawing.

In the drawing, 0; indicates the head-piece of the steam-trap, tappedlaterally at b and 0 for the reception of suitable circulating or otherfluid-conducting pipes of the steam systerm. The head is tapped at thetop at d for the reception of a suitable gland e and at the bottom at ffor the reception of a pipe or external casing g. The head is providedwith a suitable valve-seat la, with which a blow-off valve 2', carriedby a stem j in the gland e, is adapted to cooperate. This valve-seat islikewise grooved at its circumference to form a shoulder is for thereception of a frusto-conical strainer Z. The head is also provided witha lower valve-seat m, apertured at suitable points of its periphery, asat 0 0. The metal constituting or supporting the valve-seats h and m istapped for the reception of an extraheavy wrought-iron pipe Thiswroughtiron pipe 9 has screwed thereon a frame 0 having integraltherewith a spider 8, having lugs or arms t intervening between theannular body of the spider and the outer pipe or casing g. The body ofthe spider is tapped for the reception of a brass pipe u, upon the upperend of which is screwed a valve "0, adapted to bear against the seat m.A suitable lock-nut 02 is provided for the purpose of looking thebushing 'r in place when the parts are originally adjusted, it beingunderstood that when the metal of the trap is at the temperature whichwould be imparted to it by the presence of steam only in the chamberedportion thereof communicating with the steam circulation the valve nwill be held against its seat m withjust suflicient force to adequatelyprevent the escape of steam, and when the accumulation of water occursin the chamber above the valve sufficient to produce a lowering of thetemperature the unequal expansion of theiron and brass tubes 4] a willcause the valve o to be heldaway from its seat sufiiciently far toenable the water to be discharged over the Valve '0 into the pipes u andg until when the steam begins to issue the temperature conditions willbe restored and the valve v will be brought against its seat, preventingthe escape of steam, pipe a being provided with holes or apertures y topermit the escape of water from the said pipe into the outer casing ortube g, from which it will be discharged into the atmosphere.

expansion member and an adjustable supporting and locking means forsupporting the expansible member in its adjusted position;

2. In an expansion-trap the combination of a chambered head divided by apartition having a valve-seat on each of the two faces there:

of, a plurality of tubes, one within the other,

. constituting an expansion device, one tube carrying a valvecooperating with one seat and a manually-operated valve cooperating withthe other seat and adapted to discharge steam through a portion of thespace Within the inner tube.

3. An expansion-trap, comprising in combination a supporting-head, aplurality of tubes constituting an expansion device projecting from saidhead and connected thereto,

a valve carried by one of the said tubes, a valveseat in the headadaptedjo said valve, another valve-seat in the said head, ahand-operated valve also in the said head, the valve-seat for a headlocated entirely at one end of the trap, a plurality of tubes supportedthereby, one located Within the other to constitute an expansion device,the interior tube (1 being open to the atmosphere, a valve-seat in thehead communicating with the tube q, an automatically-operated valve anda hand-operated valve .'cooperating with the seat communicating withtube 4 and adapted to permitthe discharge of steam through the tube 9,substantially as described.

6. In an expansion-trap, the combination of a chambered head divided bya partition having a valve-seat on each of the two faces thereof, anexpansion-operated valve cooperating with one seat and amanually-operated valve cooperating with the other seat, an outer tube aand an inner tube q under the control of the manually-operated valve,whereby steam may be blown through the trap by the pipe g without comingin contact with the outer tube a.

7. In an expansion-trap, the combination of a head at one end of thetrap having a valveseat, a plurality of connected tubes supported fromsaid head and constituting an expansion device and one of the said tubescarrying a suitable valve adapted to the val Ve-seat, a handoperatedvalve in the head and means wherey steam may be blown through the trapout of contact with one of the tubes.

JOSEPH M. TOVVNE.

Witnesses:

R. M. DIXON, B. P. VAN PRAAG.

